<template>
  <div>
    御剑乘风来,除魔天地间!===app==={{aa}}
    <Father></Father>
  </div>
</template>
<script>
import Father from "./cp/father.vue";
export default {
  components: {
    Father,
  },
  data() {
    return {
         aa:'这里是main'
    };
  },
  provide(){
    return{
        aa:this.aa,
        fn:this.change
    }
  },
  created() {},
  computed: {},
  methods: {
    change(msg){
        this.aa=msg
    }
  },
};
</script>
<style lang='less'  scoped>
</style>
